Valve.



No. 747,339. v PATEN-TED DEC. 15,1903.

W. WRIGHT, DEGD.

M. E. WRIGHT, ADHINISTRATRIX;

VAL-VB.

APPLICATION FILED MAR. 19. 1903.

no MODEL.

9 IN VENTOH' m: Norms PETERS 00. Prgoruuruou WASHINGTON, u, n.

Patented December 15, 1963.

' UNITED STATES PATENT OFFICE.

WILLIAM WRIGHT, OF NEW YORK, N. Y.; MARY E. WRIGHT ADMINISTRA- TRIX OFSAID WILLIAM WRIGHT, DECEASED.

VALVE.

SPECIFICATION forming part of Letters Patent No. 747,339, dated December15, 190 3.

Application filed March 19 1903.

To all whom it may concern:

Be it known that LWILLIAM WRIGHT,a citizen of the United States,residingat NewYork, in the borough of Brooklyn, county of Kings, and State ofNew York, have invented certain new and useful Improvements in Valves;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in valves for steam and otherengines, air-compressors, and the like; and it consists in a novelarrangement of ports and passages.

The objects of my invention are to avoid wire-drawing and the like atthe time of opening and closing of the valve, to provide largeport-opening, to reduce friction of fluid flowing through the valve to aminimum, and to make the valve simple and easy of construction.

I will now proceed to describe my invention with reference to theaccompanying drawing, which shows a side view and partial longitudinalsection of a portion of the cylinder of a steam-engine ofthe Corlisstype, the exhaust-valves thereof constructed in accordance with myinvention being sectioned transversely, and will then point out thenovel fea tures in the claim.

7 The said drawing shows an engine-cylinder 1, having at its endsexhaust-ports 2, communicating with exhaust-valve chambers 3,

'port'2 with the corresponding port 9. sides the recess or port 10 eachvalve has a within which are the exhaust-valves 4. Said valves arerotary valves substantially cylindrical in form and may be oscillatedback and forth by arms 5 and rods 6, connected to a wrist-plate 7, whichis arranged to be vi- Between the valve-chambers 3 there is anexhaust-space 8, with which said valve-chambers connect by means ofports 9. In the side of each valve there is a recess 10, forming a portor passage,which in certain positions of the valve connects thecorresponding cylinder exhaust- Besecond port or passage 11substantially parallel to the direction of flow of fluid through recess10 and arranged likewise to connect ports 2 and 9 when the recess-port10 is connecting the same. In the operation of the Serial No. 14-8,4'72- (No model.)

valves port 11 is opened and closed simultaneously with port 10, givingrelatively large port-opening at the time of opening and closing of thevalves.

, The recess 10 of each valve provides the most direct passage possiblefor connecting ports 2 and 9. Since the passage 11 is parallel to thedirection of flow of fluid through recess 10, the fluid will flowthrough said passage 11 with a minimum of friction.

The improved valve herein described is not confined to use as anexhaust-valve;but may also be used as an admission-valve, and the valvemay be used in other types of motors besides reciprocating steam-enginesand may be used in connection with the air-cylinders of air-compressors,blowing-engines, and the like.

In stating above that the valve is substantially cylindrical I do notwish to be. understood that the valve may not have the slight taper withwhich such valves are customarily provided to permit the taking up ofwear.

I do not limit myself to the precise arrangement and form of valve-portsshown in the drawing or to the precise location and relative arrangementof ports in the valve-chamher.

What I claim is- The combination with an engine-cylinder or the like,and a valve-chamber having a single port communicating with saidcylinder, and another port through which fluid may pass into or out ofsaid valve-chamber, of a rotary valve within said chamber, having twoparallel ports, both of which, in the open position of the valve,connect directly the said ports of the valve-chamber, permitting directpassage of fluid through said valve-chamber from one port thereof to theother, one of said ports arranged to be closed, in the closed positionof the valve, by a portion of the valve-chamber adjacent to thecylinder-port, the other port of the valve arranged to be closed, insuch closed position of the valve, by a portion of the valve-chamberadjacent to the other port thereof.

In testimony whereof I affix my signature in the presence of twowitnesses.

WM. WRIGHT.

Witnesses:

HARRY M. MARBLE, MARY E. WRIGHT.

